Home / 14,221.68-21,330.09-3,831

Finding the Fourth Proportional to 14,221.68, 21,330.09 and 3,831

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Solution

The fourth proportional to 14,221.68, 21,330.09 and 3,831 is: 5,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,221.68 : 21,330.09 = 3,831 : x
  2. Step 2: Convert to fraction form
    14,221.68/21,330.09 = 3,831/x
  3. Step 3: Cross multiply
    14,221.68x = 21,330.09 × 3,831
  4. Step 4: Simplify right side
    14,221.68x = 81,715,574.79
  5. Step 5: Solve for x
    x = 81,715,574.79/14,221.68
  6. Step 6: Final answer
    x = 5,745.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.